Tersilochus (Tersilochus) grandiculus Khalaim, 2012

Khalaim, Andrey I., 2022, Tersilochinae (Hymenoptera: Ichneumonidae) of Japan: two new species, a new combination and 23 new country records, Zootaxa 5174 (4), pp. 301-330 : 316-317

Tersilochus (Tersilochus) grandiculus Khalaim, 2012

( Figs 43–49 )

Material examined. JAPAN. Shikoku I.: 1 ♀ ( EUM) Ehime Pref., 11–20. VI.2012, coll. Eiji Yamamoto. 1 ♀ ( EUM) Ehime Pref., Kumakogen , 21–30. VI.2012, coll. Eiji Yamamoto.

Diagnosis. Gena and mesopleuron more or less smooth, distinctly punctate ( Fig. 44 ). Clypeus large, lenticular. Malar space 0.7–0.9× as long as basal mandibular width ( Fig. 44 ).Antennal flagellum tapered towards apex. Notaulus distinct, with irregular wrinkles ( Fig. 44 ). Foveate groove of mesopleuron deep and long, distinctly upcurved anteriorly, with transverse wrinkles ( Fig. 45 ). Propodeal spiracle moderately large, separated from pleural carina by 1.5–2.0× diameter of spiracle ( Figs 44, 45 ). First tergite smooth laterally and dorsally ( Figs 44, 46 ); postpetiole in dorsal view much wider than petiole; glymma large, joining by distinct furrow to ventral part of postpetiole ( Figs 44, 46 ). Thyridial depression slightly elongate ( Fig. 48 ). Ovipositor short and robust, apically strongly upcurved and with lower valve expanded ventrally; ovipositor with two dorsal subapical depressions or notches and two more or less distinct rounded teeth before these depressions ( Fig. 47 ). Predominantly black species with metasoma posterior to first tergite and all legs (except coxae) predominantly yellowish brown to reddish brown ( Fig. 43 ).

Remarks. Female from Kumakogen, Ehime Pref. possesses abnormal first metasomal tergite which is abruptly curved posteriorly in lateral view ( Fig. 46 ) and has a pair of strong spiracular prominences ( Fig. 48 ). Another female from Ehime Pref. bears a parasitic larva of a mite belonging to Parasitengona (Acariformes: Trombidiformes) on dorsolateral side of the fifth tergite ( Figs 43, 49 ).

Distribution. Russian Siberia and Far East; in Japan known from Shikoku I. First record from Japan.

Figures

FIGURES 43–49. Tersilochus grandiculus, ♀ (Japan): 43—habitus (without apices of antennae), lateral; 44—mesosoma and base of metasoma, lateral; 45—mesopleuron, postero-lateral; 46—propodeum and base of metasoma, lateral; 47—ovipositor, lateral; 48—posterior part of first tergite and tergite 2, dorsal; 49—larva of mite on tergite 5 of metasoma, lateral.